New dyno trailer3 Jun, 2018 in Head Hoggers tagged harley 4 valve porting / harley big horsepower / harley big inch / harley big inch kits / harley bore and hone / harley case service / harley cylinder boring / harley engine building / harley engine performance / Harley flywheel rebuilding / harley machine shop / harley machining / Harley Milwaukee 8 kits / Head Hoggers by headhoggers (updated 1937 days ago) Just picked up the new rig for the dyno. This thing is sweet! No more staying in hotels wasting money. Just have to get everything switched over and setup.